- Transmitter is waterproof, so it can be installed outdoor also
- Made of high-precision electronic components, which allows it to operates at a higher distance
- Push button can be fixed to the door frame with screws, or attached using double-sided adhesive tapes
- Comes with various different ring tones and with the function of adjustable volume for user preference
- Easy to install and operate, it plugs into any standard wall outlet
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